Mark Z. Jacobson
@mzjacobson
Prof-Civil & Env Eng; Director-Atmosphere/Energy Prog; Research-climate, air pollution & clean/renewable energy; Cofounder-Solutions Project/100% Movement
The scientific bases for all U.S. state laws and proposed laws to go to 100% renewable, clean, 0-C, and/or 0-emissions & the #GreenNewDeal web.stanford.edu/group/efmh/jac… web.stanford.edu/group/efmh/jac… web.stanford.edu/group/efmh/jac… The only way to do any of these is with #WindWaterSolar
The scientific basis for #California's #SB100 (Effectively #100% renewable electricity by 2045) & Exec Order B-55-18 (effectively 100% renewable all-energy by 2045 to eliminate air pollution+GHGs) #GCAS2018 @GovPressOffice @StanfordEnergy @StanfordWoods @100isNow @350 @TheRE100
The global switch to renewable energy has passed a “positive tipping point” In 2024, 74% of new electricity generated & 92.5% of new capacity were from WindWaterSolar; 17 mil EVs sold 3 cheapest electricity sources globally: onshore wind, PV, hydro apnews.com/article/climat…
In 2025 so far (Jan 1-July 21), fossil gas has met only 22% of California demand (down from 28% in 2024 and 37% in 2023). In 2025, WindWaterSolar has met 57.3% of demand (up from 53.4% in 2024 and 49.0% in 2023). California will be 100% WWS by 2030-2035.
CA now 1.3 mil EVs (100,000 added Q1 '25) plus 316 data centers Yet @California_ISO demand down 1% v '24 & '23. Due mostly to behind-meter PV Gas down 22% v '24 & 41% v '23 Utility PV up 18% v '24 & 47% v '23 Batteries up 64% v '24 & 214% v '23 157 days in '25 w/>100% WWS
CA now 1.3 mil EVs (100,000 added Q1 '25) plus 316 data centers Yet @California_ISO demand down 1% v '24 & '23. Due mostly to behind-meter PV Gas down 22% v '24 & 41% v '23 Utility PV up 18% v '24 & 47% v '23 Batteries up 64% v '24 & 214% v '23 157 days in '25 w/>100% WWS
The 25 most polluted cities in the world from @WHO dominated by China (10 cities) and India (8) Pakistan, Bangladesh, Tajikistan, Nepal, UAE, Iraq 1 city each msn.com/en-in/entertai… Electrification+moving to 100% WindWaterSolar eliminates 90% of air pollution deaths+illnesses
Last Week, This Morning for July 14 to 20 - @EnergiMedia *Canada-EU trade ties *Carney doubles down on carbon pricing in EU deal * @mzjacobson and 100% wind/water/solar power for Canada *AB power grid woes *Climate change = more extreme weather youtu.be/nHCxaTkQpIM
21% less fossil gas used in CA so far in 2025 than in 2024 & 40% less than in 2023 Demand also down 0.6% v 2024 & 0.8% v 2023 So much for claims that 1) We need more fossils to meet increase in demand due to AI 2) Grid can't stay stable unless we use unleash more fossils
This is a great episode. Two questions after watching this: Where can I find a report showing the results of Mark's Canadian modeling? Do you have interviews from Canadian economists on how to grow Canada's wind industry?
Saturday July 19 was the 155th of 200 days in 2025 with >100% WindWaterSolar on the California ISO grid for part of the day (averaging 4.7 hours per day). 57.2% of all demand met in 2025 has been met with WWS
21% less fossil gas used in CA so far in 2025 than in 2024 & 40% less than in 2023 Demand also down 0.6% v 2024 & 0.8% v 2023 So much for claims that 1) We need more fossils to meet increase in demand due to AI 2) Grid can't stay stable unless we use unleash more fossils
Why renewables blow away fossil fuels instagram.com/reel/DMQwRb7ip…
Excellent @mzjacobson “Are Renewables Enough?” Only 2 actions matter (1) doing the math (2) acting on the math. Climate denialists refuse the former and doomers refuse the latter. Both are, essentially, useless people now. Don’t be a useless person. podcasts.apple.com/us/podcast/ine…
"If you spend $1 on carbon capture instead of on wind, water, and solar, you are increasing CO2, air pollution, energy requirements, energy costs, pipelines, and total social costs" Carbon Pipeline Bills Play Roulette With Public Health, Help Big Oil consumerwatchdog.org/energy/carbon-…
"These are all completely useless, waste-of-time technologies that don't help one bit with air pollution, climate, or energy security" Carbon capture Direct air capture Blue hydrogen Electro-fuels Biomass Biofuels New small and large nuclear reactors
Data show 10 of the 11 states with highest % RE (50-121%) on the grid have electricity prices >1.9 c/kWh below US avg If we keep using gas, prices will go higher+higher New homes should be all electric-saves money+health Home PV reducing grid demand youtube.com/watch?v=bEIt_Z…
My interview with @politicalham on transitioning the world to 100% clean, renewable energy and storage for everything. Part I of III. youtube.com/watch?v=cLDrNR…
Exciting News: On Tuesday, I'm interviewing Mark Z Jacobson, director of Stanford University's renowned Atmosphere/Energy Program. We'll be talking about his team's plan for Canada to run on 100% wind, solar, and water energy. I'll post it here in the afternoon. @mzjacobson
100% Renewable Canada: Mark Jacobson’s Wind, Water, Solar Master Plan @mzjacobson explains his team's plan for Canada to be powered by nothing but clean energy. Second interview of three. Watch for the last one Friday. @MarkJCarney #cdnpoli youtu.be/gAScTJDZLIU
A beautiful 100% WindWaterSolar day 153rd of 196 days (78%) in '25 with >100% WWS, for an avg of 4.8h among all days 57.2% of demand in '25 met by WWS Demand down 0.3% v '24; 0.4% v '23 Gas down 20% v '24; 39% v '23 Batteries up 64% v '24; 213% v '23 PV up 18% v '24; 47% v '23
Similarly, states should support EVs and stop promoting the use of combustion-engine vehicles through subsidies and the tax code.
California and other states should similarly tax oil, gas, & coal to make them pay for the health, climate, and land destruction they cause and go through tax codes to eliminate any benefits these fuels receive.